Tech Lead - NodeJS, React, Mongo, Microservices

Job Title : Senior Software Engineer

Experience : 5+ Years

Location : Mumbai (Work from Office)

Notice Period : Immediate to 15 Days

Mandatory Skills :

Platform Engineering, Backend Development, Python/Golang/Node.js/Elixir, Microservices, REST APIs, Cloud-Native Architecture, Distributed Systems, SQL, Cloud Platforms (AWS/Azure/GCP), Product-Based Experience

Role Overview :

We are looking for a Senior Software Engineer with strong backend engineering expertise to design, build, and scale cloud-native platform services. The ideal candidate should have experience working in product-based organizations, building highly scalable distributed systems, and contributing to platform engineering initiatives.

You will work closely with Product, DevOps, Security, and Engineering teams to build reliable, secure, and high-performance backend systems while driving technical excellence across the organization.

Key Responsibilities :

• Design, develop, and enhance core platform modules and shared backend services.
• Build scalable REST APIs, backend services, and data pipelines for high-volume production environments.
• Participate in architecture discussions and contribute to technical design decisions.
• Collaborate with Product, DevOps, Security, and Data Engineering teams to deliver scalable solutions.
• Design systems with a focus on scalability, performance, security, maintainability, and reliability.
• Troubleshoot complex production issues and implement permanent solutions.
• Review code, mentor engineers, and promote engineering best practices.
• Improve platform reliability, observability, and developer productivity.
• Drive continuous improvements in coding standards, architecture, and development processes.

Required Skills & Qualifications :

• 5+ years of software development experience in product-based companies (B2B experience preferred).
• Strong backend development experience using one or more of :
• Python
• Golang
• Node.js
• Elixir
• Hands-on experience with Microservices Architecture.
• Strong understanding of Cloud-Native Application Development.
• Experience designing and developing RESTful APIs and backend services.
• Minimum 3 years of experience working on cloud-based, customer-facing production applications.
• Strong knowledge of Distributed Systems Design.
• Experience with relational and NoSQL databases.
• Good understanding of SQL and data modeling.
• Experience designing reusable platform services consumed by multiple engineering teams.
• Strong product mindset with the ability to balance business requirements and technical excellence.
• Backend-focused engineer with exposure to frontend technologies.

Preferred Skills :

• Experience building highly scalable distributed platforms.
• Strong debugging and performance optimization skills.
• Experience with cloud platforms such as AWS, Azure, or GCP.
• Familiarity with DevOps practices, CI/CD pipelines, monitoring, logging, and observability tools.
• Excellent analytical, communication, and problem-solving skills.
• Experience mentoring engineers and driving technical initiatives.

Preferred Background :

• Product-Based Organization
• Platform Engineering Team
• FinTech or B2B SaaS products (preferred)

Strong Engineering Manager / Lead Profiles

Mandatory (Experience 1) - Must have 8+ years of overall Software Engineering/Development experience

Mandatory (Experience 2) - Must have 3+ years of experience as Engineering Manager / Team Lead role, with ownership of technical direction, delivery, and people management

Mandatory (Experience 3) - Must have hands-on Backend development experience using Python or Java, with frameworks such as FastAPI / Django / Spring / Express (Node.js)

Mandatory (Experience 4) - Must have Frontend development exposure using ReactJS, JavaScript, HTML, CSS

Mandatory (Experience 5) - Must have experience designing and building APIs, services, and integrations, including system design, PR reviews, and architectural decision-making.

Mandatory (Experience 6) - Must have experience leading engineers end-to-end – mentoring, code reviews, execution planning, and improving team productivity/quality

Mandatory (Company) - Must be from Product Companies / Startups (early to growth stage), B2B SaaS + Fintech industry is highly preferred

Mandatory (Note) - This role will be 80% team management and 20% IC (hands on coding required)

Key Responsibilities:

·      Design, develop, and maintain high-quality, scalable software solutions

·      Work extensively with AWS Serverless services such as Lambda, API Gateway, and DynamoDB

·      Implement and optimize Elasticsearch for search and analytics

·      Build backend services using NodeJS and develop front-end applications using Angular

·      Design and develop robust REST APIs with a solid understanding of web services

·      Write clean, efficient, and maintainable code in JavaScript and TypeScript

·      Troubleshoot, debug, and resolve performance issues in complex systems

·      Collaborate with cross-functional teams to deliver robust, end-to-end software solutions

Required Skills & Qualifications:

·      Bachelor’s degree in Computer Science or a related field

·      8+ years of experience in software development

·      Strong hands-on expertise in AWS Serverless (Lambda, API Gateway, DynamoDB) or .NET with SQL

·      Experience with Elasticsearch for efficient data retrieval and indexing

·      Proficiency in NodeJS, Angular, JavaScript, and TypeScript

·      Solid understanding of REST APIs and web services

·      Strong UI development skills with CSS

·      Proven experience designing solutions for complex technical requirements

·      Excellent debugging, analytical, and problem-solving abilities

 Configuration, administration, customization, and maintenance of Okta CIAM environments.

• Design and maintain configuration manuals and documentation required to sustain the Okta CIAM platform.

• Review Okta platform configurations to ensure the solution is optimized and secure for business needs.

• Support and resolve system incidents, problems, and changes.

Requirements

• 3+ years of hands-on experience with designing and building Okta solution platforms.

• At least one Okta certification in last 2 years - Okta Certified Administrator, Certified Consultant or Certified Developer certification

• Strong understanding of Single Sign On and relevant standards (OIDC, OAuth, SAML)

• 1+ year of development experience using RESTful APIs in any programming language

• Strong communication and documentation skills

• Ability to collaborate and interact productively with team members and key stakeholders.

• Bachelor's degree in Computer Science or a related field with 2-5 years hands-on experience with Java based open source tech stack
• Expertise in Core Java, Data Structures, J2EE with proven expertise in Spring MVC, Spring boot, Microservices architecture, Web Services (Rest) in distributed systems
• Practical experience with MySQL and /or NoSQL databases like Couchbase, DynamoDB, Cassandra
• Practical experience with Caching frameworks Memcached/Redis, Message Queues (JMS, RabbitMQ)
• Practical hands-on experience in JavaScript UI preferred
• Experience in building high performance, high availability REST APIs and REST clients
• Expertise with log file analysis using one or more of ELK, or Splunk
• Prior experience with CI/CD, Container architecture - Docker/Jenkins and build scripts Maven/Ant
• Prior experience in transformation to cloud platforms is preferred
• Experience with Kafka is a definite plus
• Experience with building analytics pipeline and analytics DB is a plus
• Strong practical experience in applying design patterns, multithreading concepts to solve complex problems, strong problem solving skills

NodeJS Developer:

We at Fabzen Technologies are looking for a knowledgeable and experienced individual to fulfil the role of Node.js developer.

Requirements:

• Bachelor’s degree in Computer Science, Software Engineering or related field.
• Professional experience on a software development team as a Node.js developer.
• Strong software documentation skills.
• Ability to comprehend and implement detailed project specifications as well as the ability to adapt to various technologies.
• Strong problem-solving skills.
• Understanding of Software Development Life Cycle.
• High attention to detail.
• Excellent troubleshooting and communication skills.
• Able to work well in a team setting.

The candidate must be proficient at:

• Socket programming
• Async await and promises
• Databases such as mongo, MySQL
• Passport JS for Google and Facebook integration
• Working on APIs with authentication and authorization

Responsibilities:

• Work closely with the development team to deliver code as required for the applications and their updates.
• Ensure the design and development of the application fulfil our requirements and achieve desired objectives.
• Ensure company standards are followed; Project schedules and issues are effectively managed, and the same is effectively communicated.
• Ensure documentation, knowledge sharing, and training in new software.
• Create technical specifications and test plans.
• Monitor the functioning of the application and provide suggestions and support to maintain the same.

Experience in a game development company or in developing gaming applications would be an added advantage.

We are looking for some one with 3+ Years of experience  with Microsoft technologies including.NET, ASP.Net Core MVC, C#, MS SQL Server. WPF, WCF C#, ASP.NET, XML, XSL, scripting languages including JQuery/JavaScript and HTML. 

Good to have knowledge with SQL Server 2012, indexing and queries and SSIS/SSRS.

Has Implemented Ajax Controls in C# . Net Projects

Complete understanding of MS SQL Database. Data modelling to visualize database structure.

Writing queries use for front‐end applications (websites, desktop applications, Mobile App or cloud apps).

Good understanding of Reviewing query performance and optimizing code.

Designing and coding database tables to store the application’s data.

Creating database triggers, stored procedures & functions.

Creating table indexes to improve database performance.

Has experience in writing unit tests & performing unit tests on own codes.

Responsibilities:‐

• To be responsible for managing technology in projects and providing technical guidance / solutions for work completion.

• To develop and guide the team members in enhancing their technical capabilities and increasing productivity.

• To ensure process compliance in the assigned module and participate in technical discussions/review.

• To prepare and submit status reports for minimizing exposure and risks on the project.

• Experience working with MVC framework.

• Hands on experience on various design patterns

• Experience in Unit testing development.

• Good to have experience on Team foundation server and Agile Development.

• Oversee and review code as required.

• Drive implementation and address technical roadblocks that the team is facing.

• Experience with diagnosing performance and/or memory issues is a plus, including using relevant profiler tools.

• Oversee and assist during system testing, UAT and deployment.